Cleans the first-use-date in RW_VPD (required for RMA process)

Cleans the first-use-date in RW_VPD to allow forced enterprise-enrolled
devices to guest login once after re-imaging in RMA centers. This will
allow RMA operators to test basic in-OS functionality (for one boot
only!) prior to shipping back to the customer.

BUG=chromium:397354
TEST=Manual test in Rambi

Change-Id: I81441baf43801620ede729a45c2b5f5968ac1e80
Reviewed-on: https://chromium-review.googlesource.com/225542
Tested-by: Bowgo Tsai <bowgotsai@chromium.org>
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-by: Cheng-Yi Chiang <cychiang@chromium.org>
Commit-Queue: Bowgo Tsai <bowgotsai@chromium.org>
2 files changed